I used the github source suggested by sealy_au - https://github.com/aircrack-ng/rtl8812audariuszb wrote: ↑Thu Apr 04, 2019 12:03 pmMrEngman - I have noticed that you have upgraded 8812au drivers to v220.127.116.11_28373.20180619. And finally my TP-Link -T4UHv1 seems to be stable on ac 5GHz channels. I have been fighting with ac stability for quite long trying multiple github sources. The best results I had were with v5.2.20_25672.20171213 from TP-link website after small tweaking to make them working on RPi. But it was not perfect neither. Your version seems to work perfectly. Only what I am missing is /proc/net/8812au access. Could you let me know which github source you are using? So maybe I can tweak it to my liking.